Studies On Neutron Stars With Dark Matter And Antikaon Condensation

As one of the three compactest celestial bodies,the neutron star has a very high density.The theoretical study on it can help people well understand the compact material,can enhance human understanding of the universe,and provide conditions for human research on extreme environments.The relativistic mean field theory(RMFT),the equations of TOV,a neutron star model with dark matter etc are used in the work to study the effect of the antikaon condensation and dark matter on the neutron star,which includes the neutron star mass,radius,red shift,moment of inertia and the influence of neutrino emission from the neutron star.The theoritical results are compared with the latest astronomical observation,in order to well understand the neutron star matter and the properties of the dark matter here.The work is divided into five chapters.The research background is introduced and the history and observation of the neutron star is described in the first chapter;The phase structure of the neutron star is introduced in the second chapter,and several different neutron star matter and dark matter are described shortly;In the third chapter,some basic theories to study neutron stars,including the relativistic mean field theory,the equation of TOV and a neutron star model with dark matter are given;In the fourth chapter,some properties of the neutron stars with dark matter,including the effects of dark matter on the equation of state,neutron star mass,red shift value,moment of inertia and neutrino emission are discussed;In the fifth chapter,the effect of antikaon condensation on the properties of neutron stars containing dark matter,include the structure of the neutron star and the neutrino emission is discussed carefully.The results show that the addition of the antikaon condensation strengthens the effect of dark matter on the neutron star,while the dark matter does not favour the occurrence of the antikaon condensation.